tinymce.

tinymce.php

<?php
// alter tinymce body classes 
function mss_tiny_mce_before_init($init_array) {
    // accessing global variable post
    global $post;
    $title = strtolower ($post->post_title);
    
    if($title=='home'){
        $init_array['body_class'] = $post->post_title;
    }
    
    return $init_array;
}

add_filter( 'tiny_mce_before_init', 'mss_tiny_mce_before_init' );